University of St Andrews MacTutor Mathematics History - This should be your best place to begin! The University has spent a lot of time chronicling the lives of many mathematicians and also has really great outside links to further resources.
Mathematics History - This site also has a great chronology of math history as well as biographies of famous mathematicians
Student Resources
University of St Andrews MacTutor Mathematics History - This should be your best place to begin! The University has spent a lot of time chronicling the lives of many mathematicians and also has really great outside links to further resources.
Mathematics History - This site also has a great chronology of math history as well as biographies of famous mathematicians
John Handley High Department of Mathematics - Once your activity topic is decided, this site should be helpful with potential activities and puzzles.
National Library of Virtual Manipulatives - This site is also helpful with many well-organized ideas for presenting an activity to the class.
Trinity College Math History Page - This site has basic math history information with links to biographical information.